PT-2025-25989 · Linux+1 · Linux Kernel+1

Published 2022-08-09 · Updated 2025-11-13 · CVE-2022-50063

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability in the Linux kernel has been identified, related to the dsa tree change tag proto() function. This function may cause unexpected behavior when dsa tree notify() fails, potentially leading to a kernel crash. The issue arises when the felix change tag protocol() function reports an error, resulting in another call to dsa tree notify() to restore the old tag protocol. This can cause problems, such as calling dsa tag 8021q register() twice without unregistering in between, leading to corrupted data structures. The bug can be reproduced by forcing an error while in tag 8021q mode.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Resource Release

NULL Pointer Dereference

Weakness Enumeration

CWE-404

CWE-476

Related Identifiers

BDU:2026-01636

CVE-2022-50063

Affected Products

Astra Linux

Linux Kernel

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50063.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-50063 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-50063 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01636 · Security Note
• https://git.kernel.org/stable/c/8e432f157c3edc5a97a7244c666589a438f5e4d4 · Patch
• https://git.kernel.org/stable/c/4c46bb49460ee14c69629e813640d8b929e88941 · Patch
• https://ubuntu.com/security/CVE-2022-50063 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-50063 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50063 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-50063 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50063 · Security Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.4 · Note
• https://lore.kernel.org/linux-cve-announce/2025061850-CVE-2022-50063-a233@gregkh · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1935356215741100135 · Twitter Post